Grab dinner from the ChiTownTamale, Ice-Cubed and Flirty Cupcakes food trucks, take a guided edible nature walk, learn about urban chicken raising with Jennifer Murtoff of Home to Roost and tour exhibitions including "Food: The Nature of Eating," insect inspections, a butterfly haven and more. 5-9 p.m. No cover; donations accepted.

Raise a glass for a good cause at this fundraiser for HIV/AIDS support organization Vital Bridges where the scenic riverside patio party includes Svedka vodka cocktails such as the clementine vodka-based Vital Bot plus appetizers and DJ beats. 6-9 p.m. $25. Tickets: heartlandalliance.org/vital.

The outdoor market debuts with cuisine for purchase from Tank Noodle, Hai Yen and Ba Le, a Sun Wah barbecue pig roast and pop-ups such as Uptown Brownies and Karl's Craft Soups, free live performances including a 5:30 p.m. traditional lion dance and The Hypocrites' "Romeo and Juliet" (7 p.m.) plus produce, meats, eggs and more from local farmers and retailers. 4-8 p.m. No cover. Info: exploreuptown.org.